Waist and leg exerciser

ABSTRACT

Disclosed is a waist and leg exerciser, which includes two arched track boards each defining a circularly arched sliding slot, a link, which has two distal ends respectively coupled to and movable along the circularly arched sliding slots of the arched track boards, a seat supported on the link, and two cables for alternatively pulling the two distal ends of the link along the circularly arched sliding slots of the arched track boards to cause the seat to move in an 8-shaped action.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a physical exercising machine and more particularly, to a waist and leg exerciser.

2. Description of the Related Art

Various physical exercising machines are commercially available for different exercise purposes. These conventional physical exercising machines are designed to exercise different parts of the body in one single direction, not capable of causing a twisting action.

SUMMARY OF THE INVENTION

The present invention has been accomplished under the circumstances in view. It is the main object of the present invention to provide a waist and leg exercise, which causes an 8-shaped motion to twist the user's waist and hips.

According to one embodiment of the present invention, the waist and leg exerciser comprises a machine base, an upright handle and an upright shaft respectively vertically provided at the front and rear sides of the machine base, a bracket fixedly provided at the top side of the upright shaft, two pedals bilaterally pivotally mounted on the machine base near the upright handle, two arched track boards supported above the upright shaft, each arched track board defining a circularly arched sliding slot, a link, which has two distal ends respectively coupled to and movable along the circularly arched sliding slots of the arched track boards, a seat supported on the link, and two cables respectively extending over a number of pulleys and connected between the pedals and two pull shafts for alternatively pulling the two distal ends of the link along the circularly arched sliding slots of the arched track boards to cause the seat to move in a 8-shaped action during pedaling of the pedal by the user. Further, in an alternate form of the present invention, a motor is used to rotate a cam to further causes the seat to move in an 8-shaped action.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an elevational view of a waist and leg exerciser according to a first embodiment of the present invention.

FIG. 2 is an exploded view of a part of the waist and leg exerciser according to the first embodiment of the present invention.

FIG. 3 is an exploded view of another part of the waist and leg exerciser according to the first embodiment of the present invention.

FIG. 4 is an elevational assembly view of FIG. 3.

FIG. 4A is an elevational assembly view of a part of the first embodiment of the present invention.

FIG. 5 is an installed view of a part of the first embodiment of the present invention.

FIG. 6 is a schematic drawing showing the waist and leg exerciser of the first embodiment of the present invention in action.

FIG. 7 is an exploded view of a waist and leg exerciser according to a second embodiment of the present invention.

FIG. 8 is an elevational assembly view of the waist and leg exerciser according to the second embodiment of the present invention.

FIG. 9 is another elevational assembly view of the waist and leg exerciser according to the second embodiment of the present invention.

FIG. 10 is a schematic drawing showing the waist and leg exerciser of the second embodiment of the present invention installed in a chair.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 1˜5, a waist and leg exerciser in accordance with the present invention is shown comprising a machine base 1, an upright handle 11 provided at the front side of the machine base 1, an upright shaft 12 vertically provided at the rear side of the machine base 1, a bracket 13 fixedly provided at the top side of the upright shaft 12, two pedals 14 bilaterally pivotally mounted on the machine base 1 near the bottom side of the upright handle 11, two first pulleys 15 respectively pivoted to the pedals 14, two locating pins 16 bilaterally fastened to the upright shaft 12 near the machine base 1, and two second pulleys 17 and two third pulleys 18 symmetrically pivotally mounted on the bottom side of the bracket 13.

A holder frame 2 is provided at the top side of the bracket 13. Two fourth pulleys 23 are bilaterally pivotally mounted in the holder frame 2. Two adjustment rods 21 are respectively installed in the front and rear sides of the holder frame 2. Two knobs 22 are respectively affixed to the adjustment rods 21 outside the holder frame 2.

Two arched track boards 3 are provided inside the holder frame 2, each having a circularly arched sliding slot 31. A link 4 is provided having two axle bearings 41 respectively disposed at the two distal ends and respectively coupled to the circularly arched sliding slots 31 of the arched track boards 3. A bearing plate 5 is mounted on the top side of the holder frame 2, having a plurality of axle bearings 51 provided at the top side to support a seat frame 6 to hold a seat 7. The sear frame 6 has a center steam 61 axially coupled to the upright shaft 4, and two pull shafts 62 disposed at two sides relative to the center stem 61.

Two cables 8 are respectively extending in proper order over the fourth pulleys 23, the second pulleys 17, the third pulleys 18 and the first pulleys 15, each having one end respectively fastened to the pull shafts 62 and the other end respectively fastened to the locating pins 16.

When in use, the user is sitting on the seat 7 and holding the upright handle 11 with both hands, and then alternatively pedaling the pedals 14 with the legs. When pedaling the pedals 14, the cables 8 are alternatively stretched and released to move the pull shafts 62 along the circularly arched sliding slots 31 of the arched track boards 3, causing the seat 7 to move in an 8-shaped action, and therefore the user's waist and hips are twisted. Because the user keeps pedaling the pedals 14 during operation, the muscles of the legs are well exercised.

FIGS. 7˜10 show an alternate form of the present invention. According to this embodiment, the waist and leg exerciser comprises a mount 9, two pulleys 911 bilaterally pivotally mounted in the mount 9, two track boards 3 respectively mounted in the front and rear sides of the mount 9 and defining a respective circularly arched sliding slot 31, a link 4 coupled between the circularly arched sliding slots 31 of the track boards 3, a cover plate 91 covered on the mount 9, a cam 90 pivotally supported on the cover plate 91 with an axle bearing 92, a transmission wheel 93 pivoted to the cover plate 91, a motor 95, a transmission belt 94 coupled between the output shaft of the motor 95 and the transmission wheel 93, two pull shafts 62, two rollers 96, and two cables 97 respectively extending over the pulleys 911 and connected between the pull shafts 62 and the rollers 96.

When started the motor 95 to rotate the transmission belt 96, the cam 90 is rotated to move the pull shafts 62, thereby causing the seat 7 a to move in an 8-shaped action.

A prototype of waist and leg exerciser has been constructed with the features of FIGS. 1˜10. The waist and leg exerciser functions smoothly to provide all of the features discussed earlier.

Although particular embodiments of the invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. 

1. A waist and leg exerciser comprising two arched track boards, said arched track boards each defining a circularly arched sliding slot; a link, said link having two distal ends respectively coupled to and movable along the circularly arched sliding slots of said arched track boards; a seat supported on said link; and two cables adapted to alternatively pull the two distal ends of said link along the circularly arched sliding slots of said arched track boards.
 2. The waist and leg exerciser as claimed in claim 1, further comprising a seat frame supporting said seat on said link, said seat frame having a center shaft pivoted to said link and two pull shafts disposed at two sides relative to said center shaft and respectively holding a first end of one of said two cables, a base frame, and two pedals bilaterally pivoted to said base frame respectively holding a second end of one of said two cables for pedaling by the user to stretch said cables.
 3. The waist and leg exerciser as claimed in claim 1, wherein said seat frame is mounted on a bearing plate, which is fixedly mounted with a holder frame that supports said track boards.
 4. The wait and leg exerciser as claimed in claim 1, further comprising an upright shaft fixedly provided at said base frame and adapted to support said seat frame, and a plurality of pulleys respectively symmetrically pivoted to said upright shaft and said bearing plate to guide said cables.
 5. A waist and leg exerciser comprising mount, two pulleys bilaterally pivotally mounted in said mount, two track boards respectively mounted in front and rear sides of said mount, said track boards each defining a circularly arched sliding slot, a link coupled between the circularly arched sliding slots of said track boards, a cover plate covered on said mount, a cam pivotally supported on said cover plate with an axle bearing, a transmission wheel pivoted to said cover plate, a motor, a transmission belt coupled between an output shaft of said motor and said transmission wheel, two pull shafts, two rollers, and two cables respectively extending over said pulleys and connected between said pull shafts and said e rollers. 